Why does Drop Box not work after 10.8 upgrade?"Drop Box" is use to be an idea ( before DropBox software and had nothing to do with it ) that implied that there is a shared folder (via SMB or other protocol ) on a remote machine and client can only write to it, but not read or over-write. Essentially folder only had write-only permission on network shared resource. Here I got something from console, I get it when file doesn't copy: Locum[7294]: Connection with distnoted server was invalidated